MORE 1920 x 1080 FREE SAMPLES:

My first hi-res render using Mandelbulb 3D (not to be confused with Mandelbulber which I have used a fewtimesbefore).
In some areas it seems more powerful than the other app, but in others it isn't. It's a 32-bit program, for example, so I can only use 2 GB of my 128 installed GB to process images. This means some of the post-processing options (like DOF) run out of memory on large images.
I still think it's worth learning though. Let me know what you think of the first effort!